Heat Exchanger

Abstract

The utility model relates to the technical field of environmental protection, in particular to a heat exchanger, which can first filter the smoke when treating the smoke, so as to prevent the solid impurities in the smoke from clogging the heat exchange mechanism, is easy to use, and has high reliability and practicality; comprises a bottom plate, a bracket, a cylinder and a water inlet pipe, the cylinder is fixedly mounted on the upper end of the bottom plate through the bracket, a chamber is arranged in the cylinder, the water inlet pipe is mounted on the upper part of the cylinder, and a valve is arranged on the water inlet pipe; also comprises an exhaust pipe, an induced draft fan, a heat exchange mechanism and a filtering mechanism, the output end of the induced draft fan is connected with the filtering mechanism, the output end of the filtering mechanism is connected with the input end of the heat exchange mechanism, the middle part of the heat exchange mechanism is located in the chamber of the cylinder, the heat exchange mechanism has a heat exchange function, the output end of the heat exchange mechanism is connected with the exhaust pipe, and the filtering mechanism has a filtering function.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a heat exchanger. Background Art

[0002] With the development of our society and the continuous improvement of people's living standards, people's environmental awareness is getting higher and higher. Some large-scale waste incineration stations, steel mills or foundries will produce a lot of harmful flue gas during the production and processing. These flue gases need to be passed into the patented waste gas treatment equipment for purification before they can be discharged to the outside world. Due to the high temperature of these flue gases, in order to avoid the high temperature flue gas from damaging the waste gas treatment equipment, it is necessary to first use a heat exchanger to cool these waste gases before passing them into the waste gas treatment equipment for purification. In the prior art, the utility model patent with patent application number 201420737573.8 discloses an instant heat exchanger, which mainly includes a cylinder and a heat exchange tube, and water is arranged in the cylinder; when it is used, the flue gas is passed into the heat exchange tube in the cylinder, so that the high-temperature flue gas exchanges heat with the water in the cylinder through the heat exchange tube on the cylinder, so that the flue gas is cooled and the temperature of the water is increased, and then the cooled flue gas is discharged to the outside; the inventor believes that there are the following problems during use, because the flue gas is directly passed into the heat exchange tube, and because these flue gases also contain a large amount of dust and solid floating objects, during long-term use, the heat exchange tube is easily blocked, resulting in reduced heat exchange efficiency and inconvenience in use. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a heat exchanger which can first filter the flue gas when treating the flue gas, thereby preventing solid impurities in the flue gas from clogging the heat exchange mechanism, and is easy to use and has high reliability and practicality.

[0004] The utility model heat exchanger comprises a bottom plate, a bracket, a cylinder and a water inlet pipe. The cylinder is fixedly mounted on the upper end of the bottom plate through the bracket. A chamber is arranged in the cylinder. The water inlet pipe is mounted on the upper part of the cylinder. A valve is arranged on the water inlet pipe. The utility model heat exchanger comprises an exhaust pipe, an induced draft fan, a heat exchange mechanism and a filter mechanism. The output end of the induced draft fan is connected to the filter mechanism. The output end of the filter mechanism is connected to the input end of the heat exchange mechanism. The middle part of the heat exchange mechanism is located in the chamber of the cylinder. The heat exchange mechanism has a heat exchange function. The output end of the heat exchange mechanism is connected to the exhaust pipe. The filter mechanism has a filtering function. The exhaust pipe is connected to the external smoke treatment equipment. The induced draft fan is connected to the exhaust pipe. The input end is connected with the external smoke exhaust pipe. When treating the smoke, turn on the induced draft fan to allow the high-temperature smoke to enter the filtering mechanism through the induced draft fan. Then the filtering mechanism filters out the solid impurities in the smoke. Then the filtered smoke enters the heat exchange mechanism to exchange heat with the water in the cylinder chamber to reduce the smoke temperature and increase the water temperature. Then the cooled smoke is discharged through the exhaust pipe to the external smoke treatment equipment for treatment. When treating the smoke, the smoke can be filtered first to prevent the solid impurities in the smoke from clogging the heat exchange mechanism. It is easy to use and has high reliability and practicality.

[0005] Preferably, the filtering mechanism comprises a support frame, a filter cartridge, a filter plate, an air pipe, an air pipe A, an air pipe B, an input pipe A, an input pipe B, a cover plate and a ventilating pipe. The filter cartridge is fixedly mounted on the upper end of the bottom plate through the support frame. A filter cavity is arranged in the filter cartridge. The filter plate is fixedly mounted in the middle of the filter cavity of the filter cartridge. The left end of the air pipe is connected to the filter cavity of the filter cartridge. The right end of the air pipe is connected to the heat exchange mechanism. A valve is arranged on the air pipe. Two sets of output ends are arranged on the induced draft fan. The air pipe A and the air pipe B are respectively connected to the air pipe A and the air pipe B. The output ends of air pipe A and air pipe B are respectively connected with the two sets of output ends of the induced draft fan. The output ends of air pipe A and air pipe B are both located in the filter cavity of the filter cartridge. Air pipe A and air pipe B are respectively located on the left and right sides of the filter plate. Air pipe A and air pipe B are both provided with valves. The induced draft fan is provided with two sets of input ends. Input pipe A and input pipe B are respectively connected with the two sets of input ends of the induced draft fan. Input pipe A and input pipe B are both provided with valves. The lower part of the filter cartridge is provided with a cleaning port connected with the filter cavity. The connecting plate is installed on the cleaning port by bolts. On the outside of the filter opening, a ventilation pipe is installed on the filter cartridge, a valve is arranged on the ventilation pipe, and a filter cloth is arranged in the ventilation pipe; the input pipe A is connected to the external smoke exhaust duct, and the input pipe B is connected to the external air. When the flue gas is purified, the valves on the air pipe B, the input pipe B and the ventilation pipe are closed, and the ventilation pipe is opened to allow the flue gas to enter the filter chamber through the input pipe A, the induced draft fan and the air pipe A. After that, the flue gas is filtered by the filter plate and enters the heat exchange mechanism through the air pipe for cooling. When the impurities on the filter plate are cleaned, the valves on the air pipe, the input pipe A and the air pipe A are closed, and the valves on the input pipe B, the air pipe B and the ventilation pipe are opened to allow clean air to enter the right part of the filter cartridge filter chamber through the input pipe B, the ventilation pipe and the air pipe B. After that, the air is blown to the left through the right part of the filter plate to blow off the impurities attached to the filter plate. Then, the cover plate is opened to clean the fallen solid impurities. This facilitates the cleaning of solid impurities on the filter plate and improves convenience.

[0006] Preferably, it also includes a rotating shaft, a connecting plate, a bevel gear A, a bevel gear B, a driving shaft and a driving motor. The rotating shaft is rotatably mounted on the filter plate, the connecting plate is fixedly mounted on the rotating shaft, a brush is provided on the connecting plate, the brush is tightly attached to the left end of the filter plate, the bevel gear A is fixedly mounted on the right end of the rotating shaft, the bevel gear A is meshed with the bevel gear B, the bevel gear B is fixedly mounted on the upper end of the driving shaft, the driving shaft is rotatably mounted on the filter cartridge, the lower end of the driving shaft is connected to the output end of the driving motor, and the driving motor is fixedly mounted on the filter cartridge; when cleaning impurities on the filter plate, turn on the driving motor, the driving motor rotates the bevel gear B through the driving shaft, the rotating bevel gear B drives the rotating shaft to rotate the connecting plate through the bevel gear A, and then the brush can brush off the solid impurities attached to the left end of the filter plate; the cleaning of solid impurities is convenient.

[0007] Preferably, the heat exchange mechanism includes a rotary joint A, a rotary joint B, a heat exchange tube and a driving mechanism. The rotary joint A and the rotary joint B are respectively installed on the left and right parts of the cylinder. The left and right ends of the heat exchange tube are respectively connected with the rotary joint A and the rotary joint B. The heat exchange tube is rotatably installed on the cylinder. The output end of the gas pipe is connected with the rotary joint A, and the output end of the rotary joint B is connected with the exhaust pipe. The heat exchange tube is located in the chamber of the cylinder, and the driving mechanism is used to rotate the heat exchange tube. When treating the flue gas, the flue gas enters the heat exchange tube through the gas pipe and the rotary joint A, and then the flue gas exchanges heat with the water in the chamber of the cylinder through the tube wall of the heat exchange tube, and then the flue gas is discharged to the external exhaust gas treatment device through the rotary joint B and the exhaust pipe, which facilitates the cooling of the flue gas.

[0008] Preferably, the driving mechanism includes sprocket A, chain, sprocket B, rotating shaft and servo motor, sprocket A is fixedly mounted on the right part of the heat exchange tube, sprocket A is transmission connected to sprocket B through the chain, sprocket B is fixedly installed on the rotating shaft, and the input end of the rotating shaft is connected to the servo motor; when cooling the flue gas, the servo motor is turned on, the servo motor rotates sprocket B through the rotating shaft, and sprocket B drives the heat exchange tube to rotate through the chain. The heat exchange tube is in uniform contact with the water in the cylinder chamber during rotation, so the water in the cylinder chamber can be evenly heated, which facilitates the heating of the water.

[0009] Preferably, a water collecting tank is provided on the bottom plate, a drain pipe is provided at the lower part of the cylinder, the output end of the drain pipe is connected to the water collecting tank, and a temperature control valve is provided on the drain pipe; when the water temperature in the cylinder chamber reaches a certain level, the water enters the water collecting tank through the drain pipe, and then people can take the water in the water collecting tank for use; thus facilitating water recovery.

[0010] Preferably, a heat-insulating layer is provided on the outer wall of the cylinder; through the above arrangement, heat loss is reduced and reliability is improved.

[0011] Compared with the prior art, the utility model has the following beneficial effects: when treating the flue gas, the flue gas can be filtered first, thereby preventing solid impurities in the flue gas from clogging the heat exchange mechanism, and the utility model is easy to use and has high reliability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a first axonometric structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the filtering mechanism;

[0014] Figure 3 It is a second axonometric structural schematic diagram of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the heat exchange mechanism;

[0016] Figure 5 It is a structural diagram of the water collecting tank and cylinder.

[0017] Markings in the attached drawings: 1. bottom plate; 2. bracket; 3. cylinder; 4. water inlet pipe; 5. exhaust pipe; 6. induced draft fan; 7. support frame; 8. filter cartridge; 9. filter plate; 10. air supply pipe; 11. air pipe A; 12. air pipe B; 13. input pipe A; 14. input pipe B; 15. cover plate; 16. vent pipe; 17. rotating shaft; 18. connecting plate; 19. bevel gear A; 20. bevel gear B; 21. driving shaft; 22. driving motor; 23. rotary joint A; 24. rotary joint B; 25. heat exchange tube; 26. sprocket A; 27. chain; 28. sprocket B; 29. ​​rotating shaft; 30. servo motor; 31. water collecting tank. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example 1

[0020] like Figures 1 to 5 The heat exchanger of the utility model includes a bottom plate 1, a bracket 2, a cylinder 3, a water inlet pipe 4, an exhaust pipe 5, an induced draft fan 6, a heat exchange mechanism and a filtering mechanism. The cylinder 3 is fixedly installed on the upper end of the bottom plate 1 through the bracket 2. A chamber is arranged in the cylinder 3. The water inlet pipe 4 is installed on the upper part of the cylinder 3. A valve is arranged on the water inlet pipe 4. The output end of the induced draft fan 6 is connected with the filtering mechanism. The output end of the filtering mechanism is connected with the input end of the heat exchange mechanism. The middle part of the heat exchange mechanism is located in the chamber of the cylinder 3. The heat exchange mechanism has a heat exchange function. The output end of the heat exchange mechanism is connected with the exhaust pipe 5. The filtering mechanism has a filtering function. The exhaust pipe 5 is connected to the external flue gas treatment equipment. The input end of the induced draft fan 6 is connected with the external smoke exhaust duct. When the smoke is treated, the induced draft fan 6 is turned on to allow the high-temperature smoke to enter the filtering mechanism through the induced draft fan 6. The filtering mechanism then filters out the solid impurities in the smoke. The filtered smoke then enters the heat exchange mechanism to exchange heat with the water in the chamber of the cylinder 3 to reduce the smoke temperature and increase the water temperature. The cooled smoke then is discharged through the exhaust pipe 5 to the external smoke treatment equipment for treatment. When treating the smoke, the smoke can be filtered first to prevent the solid impurities in the smoke from clogging the heat exchange mechanism. The smoke is easy to use and has high reliability and practicality.

[0021] like Figure 2The filtering mechanism includes a support frame 7, a filter cartridge 8, a filter plate 9, an air pipe 10, an air pipe A11, an air pipe B12, an input pipe A13, an input pipe B14, a cover plate 15 and a vent pipe 16. The filter cartridge 8 is fixedly mounted on the upper end of the bottom plate 1 through the support frame 7. A filter cavity is arranged in the filter cartridge 8. The filter plate 9 is fixedly mounted in the middle of the filter cavity of the filter cartridge 8. The left end of the air pipe 10 is connected to the filter cavity of the filter cartridge 8. The right end of the air pipe 10 is connected to the heat exchange mechanism. A valve is arranged on the air pipe 10. Two sets of output ends are arranged on the induced draft fan 6. The air pipe A11 and the air pipe B 12 are respectively connected to the two output ends of the induced draft fan 6, the output ends of the air pipe A11 and the air pipe B12 are both located in the filter cavity of the filter cartridge 8, the air pipe A11 and the air pipe B12 are respectively located on the left and right sides of the filter plate 9, and the air pipe A11 and the air pipe B12 are both provided with valves. The induced draft fan 6 is provided with two sets of input ends, and the input pipe A13 and the input pipe B14 are respectively connected to the two input ends of the induced draft fan 6, and the input pipe A13 and the input pipe B14 are both provided with valves. The lower part of the filter cartridge 8 is provided with a cleaning port connected to the filter cavity, and the connecting plate 18 is fixed by bolts. Installed on the outside of the cleaning port, the ventilation pipe 16 is installed on the filter cartridge 8, a valve is provided on the ventilation pipe 16, and a filter cloth is provided in the ventilation pipe 16; the input pipe A13 is connected to the external exhaust duct, and the input pipe B14 is connected to the external air. When the flue gas is purified, the valves on the air pipe B12, the input pipe B14 and the ventilation pipe 16 are closed, and the ventilation pipe 16 is opened, so that the flue gas enters the filter chamber through the input pipe A13, the induced draft fan 6 and the air pipe A11, and then the flue gas is filtered by the filter plate 9 and enters the heat exchange mechanism through the air pipe 10 for cooling. When cleaning the impurities on the filter plate 9, close the valves on the air supply pipe 10, the input pipe A13 and the trachea A11, open the valves on the input pipe B14, the trachea B12 and the vent pipe 16, so that the clean air enters the right part of the filter chamber of the filter cartridge 8 through the input pipe B14, the vent pipe 16 and the trachea B12, and then the air is blown to the left through the right part of the filter plate 9, so that the air blows off the impurities attached to the filter plate 9, and then open the cover plate 15 to clean the fallen solid impurities; it is convenient to clean the solid impurities on the filter plate 9 and improves the convenience.

[0022] Continuing to refer to the driving motor 22, the rotating shaft 17 is rotatably mounted on the filter plate 9, the connecting plate 18 is fixedly mounted on the rotating shaft 17, a brush is provided on the connecting plate 18, the brush is tightly attached to the left end of the filter plate 9, the bevel gear A19 is fixedly mounted on the right end of the rotating shaft 17, the bevel gear A19 is meshed with the bevel gear B20, the bevel gear B20 is fixedly mounted on the upper end of the driving shaft 21, the driving shaft 21 is rotatably mounted on the filter cartridge 8, the lower end of the driving shaft 21 is connected to the output end of the driving motor 22, and the driving motor 22 is fixedly mounted on the filter cartridge 8; when the impurities on the filter plate 9 are cleaned, the driving motor 22 is turned on, the driving motor 22 rotates the bevel gear B20 through the driving shaft 21, the rotating bevel gear B20 drives the rotating shaft 17 to drive the connecting plate 18 to rotate through the bevel gear A19, and then the brush can brush off the solid impurities attached to the left end of the filter plate 9; it is convenient to clean the solid impurities.

[0023] like Figure 4 The heat exchange mechanism includes a rotary joint A23, a rotary joint B24, a heat exchange tube 25 and a driving mechanism. The rotary joint A23 and the rotary joint B24 are respectively installed on the left and right parts of the cylinder 3. The left and right ends of the heat exchange tube 25 are respectively connected with the rotary joint A23 and the rotary joint B24. The heat exchange tube 25 is rotatably installed on the cylinder 3. The output end of the gas pipeline 10 is connected with the rotary joint A23, and the output end of the rotary joint B24 is connected with the exhaust pipe 5. The heat exchange tube 25 is located in the chamber of the cylinder 3, and the driving mechanism is used to rotate the heat exchange tube 25. When the flue gas is treated, the flue gas enters the heat exchange tube 25 through the gas pipeline 10 and the rotary joint A23, and then the flue gas exchanges heat with the water in the chamber of the cylinder 3 through the tube wall of the heat exchange tube 25, and then the flue gas is discharged to the external exhaust gas treatment device through the rotary joint B24 and the exhaust pipe 5; it is convenient to cool the flue gas.

[0024] The driving mechanism includes sprocket A26, chain 27, sprocket B28, rotating shaft 29 and servo motor 30. Sprocket A26 is fixedly sleeved on the right part of heat exchange tube 25. Sprocket A26 is connected to sprocket B28 through chain 27. Sprocket B28 is fixedly installed on rotating shaft 29. The input end of rotating shaft 29 is connected to servo motor 30. When cooling the flue gas, servo motor 30 is turned on. Servo motor 30 rotates sprocket B28 through rotating shaft 29. Sprocket B28 drives sprocket A26 to rotate heat exchange tube 25 through chain 27. Heat exchange tube 25 is in uniform contact with water in the chamber of cylinder 3 during rotation, and water in the chamber of cylinder 3 is uniformly heated, which facilitates heating of water. A heat insulation layer is provided on the outer wall of cylinder 3.

[0025] Example 2

[0026] On the basis of Example 1, a water collecting tank 31 is additionally provided, a drain pipe is provided at the lower part of the cylinder 3, the output end of the drain pipe is connected to the water collecting tank 31, and a temperature control valve is provided on the drain pipe; when the water temperature in the chamber of the cylinder 3 reaches a certain level, the water enters the water collecting tank 31 through the drain pipe, and then people can use the water in the water collecting tank 31, which facilitates the recovery of water.

[0027] The induced draft fan 6, ventilation pipe 16, rotary joint A23, rotary joint B24, heat exchange tube 25, servo motor 30 and temperature control valve of the heat exchanger of the utility model are all purchased on the market. The technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative efforts.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A heat exchanger, comprising a base plate (1), a bracket (2), a cylinder (3) and a water inlet pipe (4), wherein the cylinder (3) is fixedly mounted on the upper end of the base plate (1) through the bracket (2), a chamber is arranged inside the cylinder (3), the water inlet pipe (4) is mounted on the upper part of the cylinder (3), and a valve is arranged on the water inlet pipe (4); characterized in that: It also includes an exhaust pipe (5), an induced draft fan (6), a heat exchange mechanism and a filtering mechanism. The output end of the induced draft fan (6) is connected to the filtering mechanism. The output end of the filtering mechanism is connected to the input end of the heat exchange mechanism. The middle of the heat exchange mechanism is located in the chamber of the cylinder (3). The heat exchange mechanism has a heat exchange function. The output end of the heat exchange mechanism is connected to the exhaust pipe (5). The filtering mechanism has a filtering function.

2. The heat exchanger according to claim 1, characterized in that The filtering mechanism comprises a support frame (7), a filter cartridge (8), a filter plate (9), an air pipe (10), an air pipe A (11), an air pipe B (12), an input pipe A (13), an input pipe B (14), a cover plate (15) and a ventilation pipe (16); the filter cartridge (8) is fixedly mounted on the upper end of the bottom plate (1) through the support frame (7); a filter cavity is arranged in the filter cartridge (8); the filter plate (9) is fixedly mounted in the middle of the filter cavity of the filter cartridge (8); the left end of the air pipe (10) is in communication with the filter cavity of the filter cartridge (8); the right end of the air pipe (10) is in communication with the heat exchange mechanism; a valve is arranged on the air pipe (10); two groups of output ends are arranged on the induced draft fan (6); the air pipe A (11) and the air pipe B (12) are respectively connected to the two groups of output ends of the induced draft fan (6); The output ends of the pipe A (11) and the air pipe B (12) are both located in the filter cavity of the filter cartridge (8). The air pipe A (11) and the air pipe B (12) are respectively located on the left and right sides of the filter plate (9). The air pipe A (11) and the air pipe B (12) are both provided with valves. The induced draft fan (6) is provided with two sets of input ends. The input pipe A (13) and the input pipe B (14) are respectively connected to the two sets of input ends of the induced draft fan (6). The input pipe A (13) and the input pipe B (14) are both provided with valves. The lower part of the filter cartridge (8) is provided with a cleaning port communicating with the filter cavity. The connecting plate (18) is installed on the outer side of the cleaning port by bolts. The ventilation pipe (16) is installed on the filter cartridge (8). The ventilation pipe (16) is provided with a valve. A filter cloth is provided in the ventilation pipe (16).

3. The heat exchanger according to claim 2, characterized in that The invention also comprises a rotating shaft (17), a connecting plate (18), a bevel gear A (19), a bevel gear B (20), a driving shaft (21) and a driving motor (22). The rotating shaft (17) is rotatably mounted on the filter plate (9), the connecting plate (18) is fixedly mounted on the rotating shaft (17), a brush is arranged on the connecting plate (18), the brush is in close contact with the left end of the filter plate (9), the bevel gear A (19) is fixedly mounted on the right end of the rotating shaft (17), the bevel gear A (19) is meshed with the bevel gear B (20), the bevel gear B (20) is fixedly mounted on the upper end of the driving shaft (21), the driving shaft (21) is rotatably mounted on the filter cartridge (8), the lower end of the driving shaft (21) is connected to the output end of the driving motor (22), and the driving motor (22) is fixedly mounted on the filter cartridge (8).

4. The heat exchanger according to claim 2, characterized in that The heat exchange mechanism comprises a rotary joint A (23), a rotary joint B (24), a heat exchange pipe (25) and a driving mechanism. The rotary joint A (23) and the rotary joint B (24) are respectively mounted on the left and right parts of the cylinder (3). The left and right ends of the heat exchange pipe (25) are respectively connected to the rotary joint A (23) and the rotary joint B (24). The heat exchange pipe (25) is rotatably mounted on the cylinder (3). The output end of the gas transmission pipe (10) is connected to the rotary joint A (23). The output end of the rotary joint B (24) is connected to the exhaust pipe (5). The heat exchange pipe (25) is located in the chamber of the cylinder (3). The driving mechanism is used to rotate the heat exchange pipe (25).

5. The heat exchanger according to claim 4, characterized in that The driving mechanism comprises a sprocket A (26), a chain (27), a sprocket B (28), a rotating shaft (29) and a servo motor (30). The sprocket A (26) is fixedly sleeved on the right part of the heat exchange tube (25). The sprocket A (26) is connected to the sprocket B (28) through the chain (27). The sprocket B (28) is fixedly mounted on the rotating shaft (29). The input end of the rotating shaft (29) is connected to the servo motor (30).

6. The heat exchanger according to claim 1, characterized in that A water collecting tank (31) is arranged on the bottom plate (1), a drainage pipe is arranged at the lower part of the cylinder (3), the output end of the drainage pipe is connected to the water collecting tank (31), and a temperature control valve is arranged on the drainage pipe.

7. The heat exchanger according to claim 1, characterized in that: A heat-insulating layer is provided on the outer wall of the cylinder (3).

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